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Preparation method of graphene oxide modified triptycenyl polyamide separation membrane

A technique for modification of ptycene-based polyamide and graphene, applied in separation methods, chemical instruments and methods, semi-permeable membrane separation, etc., to achieve the effects of reducing investment costs, high uniformity, and excellent mechanical properties

Active Publication Date: 2020-05-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Preparation of separation membrane by modifying triptyl polyamide with graphene oxide, no patent report yet

Method used

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  • Preparation method of graphene oxide modified triptycenyl polyamide separation membrane
  • Preparation method of graphene oxide modified triptycenyl polyamide separation membrane
  • Preparation method of graphene oxide modified triptycenyl polyamide separation membrane

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Effect test

Embodiment 1

[0056] Get 0.3g (1mmol) of 2,6,14-triaminotriptycene, put it into a 250ml three-necked flask, add 20ml dimethylformamide at normal temperature to stir and dissolve, then add 0.15mg graphene oxide (purchased from Nanjing Jicang Nano Technology Co., Ltd., model: JCGO-1-2), add 10ml dimethylformamide to configure the dispersion (put 0.15mg graphene oxide and 10ml dimethylformamide in a 20ml strain bottle, Then put it in an ultrasonic device, ultrasonic for 30min), pour the prepared graphene oxide dispersion into a three-necked flask, then add 0.9g (11.4mmol) of pyridine, then lower the temperature to -5°C, and react under nitrogen Under protection, add 20ml of dimethylformamide to the round bottom flask at the same time, add suberoyl chloride 0.6g (2.84mmol) after the temperature drops to -5°C, and add 10ml of dimethylformamide at the same time. React at -5°C for 2.5 hours under nitrogen protection. After the reaction was completed, the reaction temperature was raised to room te...

Embodiment 2

[0064] Take 0.6g (2mmol) of 2,7,14-triaminotriptycene, put it into a 250ml three-necked flask, add 20ml of methylpyrrolidone at room temperature for stirring and dissolving, and then add 0.6mg of graphene oxide to 10ml of methylpyrrolidone Carry out the configuration of the dispersion (put 0.6mg graphene oxide and 10ml methylpyrrolidone in a 20ml inoculum bottle, then place it in an ultrasonic device, and ultrasonicate for 30min), pour the configured graphene oxide dispersion into a three-necked flask , then add 3g (29.65mmol) of triethylamine, and then lower the temperature to 0°C, and the reaction is carried out under the protection of nitrogen, and at the same time, add 20ml of methylpyrrolidone to the round-bottomed flask, and add after the temperature drops to 0°C Add 1.8 g (9.84 mmol) of adipoyl chloride, and add 10 ml of methylpyrrolidone at the same time, and react for 3 hours at a temperature of 0° C. under nitrogen protection. After the reaction was completed, the re...

Embodiment 3

[0072] Take 0.45g (1.38mmol) of 9,10-dimethyl-2,6,14-triaminotriptycene, put it into a 250ml three-necked flask, add 20ml of dimethylformamide at room temperature to stir and dissolve, and then put 0.675mg graphene oxide, add 10ml dimethylformamide to prepare the dispersion (put 0.675mg graphene oxide and 10ml dimethylformamide in a 20ml strain bottle, then place it in an ultrasonic device, and ultrasonicate for 30min) , Pour the prepared graphene oxide dispersion into a three-necked flask, then add 1.8g (22.76mmol) of pyridine, and then lower the temperature to 5°C, and the reaction is carried out under the protection of nitrogen, and at the same time, add to the round bottom flask Add 20ml of dimethylformamide, and after the temperature drops to 5°C, add 0.9g (4.57mmol) of pimeloyl chloride, and at the same time add 10ml of dimethylformamide, and react at a temperature of 5°C under nitrogen protection for 4 hours. After the reaction was completed, the reaction temperature wa...

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Abstract

The invention discloses a preparation method of a graphene oxide modified triptycenyl polyamide separation membrane. The method comprises the following steps: carrying out polymerization reaction in an organic solvent in the presence of an acid-binding agent by using a triptycenyl compound containing an active group, a diacyl chloride compound and a graphene oxide compound as monomers; pouring a polymer solution obtained by the reaction into deionized water for precipitation, filtering out precipitates, respectively washing the precipitates with methanol and deionized water, and performing drying to obtain a graphene oxide modified triptycenyl polymer; dissolving the graphene oxide modified triptycenyl polymer in an organic solvent to prepare a membrane casting solution, coating a supportbody with the membrane casting solution, and performing drying to obtain the graphene oxide modified triptycenyl polyamide separation membrane. The triptycenyl polyamide separation membrane solves theproblem of close packing of macromolecules of a net structure, and breaks through the limitation of small flux of a traditional triptycenyl polyamide separation membrane.

Description

technical field [0001] The invention relates to a preparation method of a graphene oxide modified triptycene-based polyamide film, which belongs to the polymer film preparation technology and belongs to the field of polymer film. Background technique [0002] Volatile organic compounds (VOCs) are a class of highly volatile substances. The unorganized discharge of volatile organic compounds will not only cause a large waste of resources, but also cause environmental pollution and seriously endanger human health. For this reason, the country has promulgated various laws and regulations to control the emission concentration of volatile organic compounds, such as "Comprehensive Emission Standards of Air Pollutants". In order to meet the national emission requirements, researchers have developed a variety of treatment technologies, such as using adsorption, absorption, condensation, membrane separation, etc. to treat and recover organic waste gas, and using technologies such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/56B01D69/02B01D67/00B01D53/22
CPCB01D71/024B01D71/56B01D69/02B01D67/0079B01D53/228B01D2257/708
Inventor 周浩力陈缘秦金超金万勤
Owner NANJING UNIV OF TECH
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